Noise Abatement Decision Report. Addendum. Supplemented by the August 2015 Noise Study Report Addendum

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1 Interstate 10 Corridor Project Draft NADR Addendum Noise Abatement Decision Report Addendum Supplemented by the August 2015 Noise Study Report Addendum San Bernardino and Los Angeles Counties 07-LA-10 PM 44.9/ SBD-10 PM 0.0/R37.0 EA 0C2500 EFIS ID August 2015

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5 Summary This addendum to the I-10 Corridor Project Noise Abatement Decision Report (NADR) was prepared to analyze whether feasible and reasonable noise abatement would be possible for impacted receivers located south of the Union Pacific Railroad (UPRR) railroad tracks with a soundwall located on private property. Soundwalls are being considered on private property because 1) UPRR will not allow soundwalls to be constructed on their R/W, 2) soundwall analysis was only performed on the shoulder of I-10, and 3) soundwalls located on the shoulder of I-10 would not provide feasible noise abatement and meet the design goal, as established in the Noise Study Report (NSR) (Parsons, 2015). The purpose of this NADR Addendum is to evaluate traffic noise impacts and abatement under the requirements of Title 23, Part 772 of the Code of Federal Regulations (Title 23 CFR 772) Procedures for Abatement of Highway Traffic Noise. Title 23 CFR 772 provides procedures for preparing operational and construction noise studies as well as evaluating noise abatement considered for federal and federal-aid highway projects. According to Title 23 CFR 772.3, all highway projects that are developed in conformance with this regulation are deemed to be in conformance with Federal Highway Administration (FHWA) noise standards. The California Department of Transportation (Caltrans), in cooperation with the San Bernardino Associated Governments (SANBAG), proposes to add freeway lanes through all or a portion of the 33-mile long stretch of I-10 from the Los Angeles/San Bernardino (LA/SB) county line to Ford Street in San Bernardino County. The project limits including transition areas extend from approximately 0.4 mile west of White Avenue in the City of Pomona at Post Mile (PM) 44.9 to Live Oak Canyon Road in the City of Yucaipa at PM However, for the purpose of this addendum to the I-10 Corridor Project Noise Study Report (NSR) (Parsons, 2015), the project limits extend from Cherry Avenue in the City of Fontana to Cedar Avenue in the City of Bloomington (San Bernardino County). This addendum analyzes land uses south of I-10 in three distinct segments that are based on major local interchanges. The three segments are: Segment 9 West of Cherry Avenue to Citrus Avenue Segment 10 Citrus Avenue to Sierra Avenue Segment 11 Sierra Avenue to west of Cedar Avenue Railroad tracks run parallel to I-10 from Segment 9 to 16. However, the study limits of this addendum are land uses south of I-10 in Segments 9, 10, and 11. This is because there are no outdoor use areas south of the train tracks within the study limits in Segments 12 through 14 and the UPRR flyover structure on retaining walls in Segments 15 and 16 would nullify all efforts to provide feasible noise abatement with a soundwall located on private property.

6 This report analyzes noise barriers with heights from 8 to 24 feet to determine feasible noise abatement for Build Alternatives 2 and 3. Soundwalls are considered feasible when they provide at least 5 db of noise reduction. The Noise Reduction Design Goal, which is one measure in determining whether a soundwall is reasonable, is achieved when a barrier is predicted to provide a noise reduction of at least 7 db at one or more benefitted receivers. Two additional measures in determining the reasonableness of a soundwall include considering the viewpoints of property owners and residences of benefitted receivers, and the cost effectiveness of constructing the soundwall.

7 Table of Contents Table of Contents Chapter 1 Introduction...1 Chapter 2 Results of the Noise Study Report...3 Chapter 3 Preliminary Noise Abatement Decision Summary of Key Information Nonacoustical Factors Relating to Feasibility Preliminary Recommendation and Decision...13 Chapter 4 Secondary Effects of Abatement...17 Chapter 5 References...19 Chapter 6 List of Preparers...71 Appendices Appendix A Appendix B Appendix C Appendix D Alternative 2 Figures Showing Recommended Barrier Heights and Locations Alternative 3 Figures Showing Recommended Barrier Heights and Locations Alternative 2 Cost Analysis Alternative 3 Cost Analysis I-10 Corridor Project i

8 Table of Contents List of Tables Table 2-1. Summary of Barrier Evaluation from Noise Study Report (Alternative 2)...5 Table 2-2. Summary of Barrier Evaluation from Noise Study Report (Alternative 3)...6 Table 3-1. Summary of Abatement Key Information (Alternative 2)...10 Table 3-2. Summary of Abatement Key Information (Alternative 3)...11 ii I-10 Corridor Project

9 List of Acronyms and Abbreviated Terms List of Acronyms and Abbreviated Terms Benefitted residence Caltrans CCD CFR CPI db ED FHWA A dwelling unit expected to receive a noise reduction of at least 5 db from the proposed abatement measure California Department of Transportation Caltrans Cost Database I-10 Interstate 10 LA/SB NADR NSR PM Protocol Reasonable allowance SANBAG TNM UPRR Code of Federal Regulations Construction Price Index decibel A measure of sound pressure level on a logarithmic scale Environmental Document Federal Highway Administration Los Angeles/San Bernardino Noise Abatement Decision Report Noise Study Report Post Mile Caltrans Traffic Noise Analysis Protocol A single dollar value a reasonable allowance per benefited residence that embodies three reasonableness factors San Bernardino Associated Governments Traffic Noise Model Union Pacific Railroad I-10 Corridor Project iii

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11 Chapter 1 Introduction Caltrans, in cooperation with the San Bernardino Associated Governments (SANBAG), proposes to add freeway lanes through all or a portion of the 33-mile long stretch of I-10 from the Los Angeles/San Bernardino (LA/SB) county line to Ford Street in San Bernardino County. The project limits including transition areas extend from approximately 0.4 mile west of White Avenue in the City of Pomona at Post Mile (PM) 44.9 to Live Oak Canyon Road in the City of Yucaipa at PM However, for the purpose of this addendum to the I-10 Corridor Project Noise Abatement Decision Report (NADR) (Parsons, 2015), the project limits extend from Cherry Avenue in the City of Fontana to Cedar Avenue in the City of Bloomington (San Bernardino County). This addendum to the NADR analyzes land uses south of I-10 in three distinct segments that are based on major local interchanges. The three segments are: Segment 9 West of Cherry Avenue to Citrus Avenue Segment 10 Citrus Avenue to Sierra Avenue Segment 11 Sierra Avenue to west of Cedar Avenue This addendum to the I-10 Corridor Project NADR was prepared to determine whether feasible and reasonable noise abatement would be possible for impacted receivers located south of the Union Pacific Railroad (UPRR) railroad tracks with a soundwall located on private property. Soundwalls are being considered on private property because 1) UPRR will not allow soundwalls to be constructed on their R/W, 2) soundwall analysis was only performed on the shoulder of I-10, and 3) soundwalls located on the shoulder of I-10 would not provide feasible noise abatement and meet the design goal, as established in the Noise Study Report (NSR) (Parsons, 2015). Railroad tracks run parallel to I-10 from Segment 9 to 16. However, the study limits of this addendum are land uses south of I-10 in Segments 9, 10, and 11. This is because there are no outdoor use areas south of the train tracks within the study limits in Segments 12 through 14 and the UPRR flyover structure on retaining walls in Segments 15 and 16 would nullify all efforts to provide feasible noise abatement with a soundwall located on private property. The areas south of I-10 in Segments 9, 10, and 11 are mixed use containing both residential and commercial uses on the same property. The study area was examined I-10 Corridor Project 1

12 List of Acronyms and Abbreviated Terms in detail to confirm that the outdoor use areas are properly represented using the latest available information. This addendum is based on the I-10 NADR, dated July This addendum includes the conclusions relating to acoustical feasibility; the 7-dB noise reduction design goal; the reasonable allowances for abatement evaluated; the engineer s cost estimate for evaluated abatement; and the preliminary noise abatement decision as defined in the California Department of Transportation (Caltrans) Traffic Noise Analysis Protocol (Protocol). The Protocol establishes a process for assessing the reasonableness and feasibility of noise abatement. This process is described in detail in the approved I-10 Corridor Project NADR. This report has been approved by a California licensed professional civil engineer. The project-level NSR, NSR Addendum, and NADR (Parsons, 2015) prepared for this project are hereby incorporated by reference. 2 I-10 Corridor Project

13 Chapter 2 Results of the Noise Study Report The addendum to the NSR was conducted to determine future traffic noise impacts of the proposed project at frequent human use areas within segments 9 through 11 along the I-10 corridor. In Segments 9 through 11, the Union Pacific Railroad (UPRR) mainline runs parallel to the eastbound I-10 mainline. The future worst-case traffic noise impact at frequent outdoor human use areas along the project corridor was modeled for the No Build Alternative and two build alternatives to determine appropriate abatement measures. In accordance with Title 23 CFR 772, noise abatement is considered where traffic noise impacts are predicted in areas of frequent human use that would benefit from a lowered noise level. Potential noise abatement measures identified in the Protocol include the following: Avoiding the impact by using design alternatives, such as altering the horizontal and vertical alignment of the project Constructing noise barriers Acquiring property to serve as a buffer zone Using traffic management measures to regulate types of vehicles and speeds Acoustically insulating public use or nonprofit institutional structures Due to the constrained configuration and suburban location of the project, abatement in the form of noise barriers is the only abatement measure considered to be feasible. Each noise barrier was evaluated for feasibility based on achievable noise reduction (5 db or more). For each noise barrier determined to be acoustically feasible and meeting the design goal of achieving 7-dB noise reduction for at least one location, the estimated cost and total cost allowance for the noise barrier were calculated. If the estimated cost is found to be equal to or less than the total cost allowance, then that noise barrier would have met the reasonableness cost criteria. The total cost allowance is calculated by multiplying the number of benefited residences by the cost allowance per benefited receiver/residence. A $71,000 cost allowance per benefited receiver/ residence, which is based on the published Caltrans annual Construction Price Index (CPI), was used. I-10 Corridor Project 3

14 Chapter 2 Results of the Noise Study Report The noise analysis considered barrier heights ranging from 8 to 24 feet. The barrier heights and locations were evaluated to determine if a minimum 5-dB attenuation at the outdoor frequent use areas of the representative receivers could be achieved. The minimum barrier height required to cut the line-of-sight from each receiver to the exhaust stacks of heavy trucks has been calculated for all feasible barriers. These heights were evaluated through calculations performed by Traffic Noise Model, Version 2.5 (TNM 2.5). The identified feasible soundwalls are new soundwalls to be built as part of the I-10 Corridor Project. The minimum heights and locations of the soundwalls that would provide feasible abatement and meet the design goal are shown graphically in Appendix C of the NSR addendum. Table 2-1 presents feasible soundwalls that were considered for Alternative 2 and summarizes the data used to assess the reasonableness allowances at each of the considered barrier heights. Table 2-2 presents feasible soundwalls that were considered for Alternative 3 and summarizes the data used to assess the reasonableness allowances at each of the considered barrier heights. 4 I-10 Corridor Project

15 Chapter 2 Results of the Noise Study Report Table 2-1. Summary of Barrier Evaluation from Noise Study Report (Alternative 2) Barrier Location Station S1818 S1834 Private Property South of I-10, East of Citrus Avenue Private Property South of I-10, East of Cypress Avenue to to Height (feet) N/A = Not applicable. Barrier does not provide 5 db of noise reduction. Acoustically Feasible? Number of Benefited Residences Design Goal Achieved? Reasonable Allowance per Residence Total Reasonable Allowance 8 No 0 No N/A N/A 10 No 0 No N/A N/A 12 No 0 No N/A N/A 14 Yes 1 No $71,000 $71, Yes 1 No $71,000 $71, Yes 1 Yes $71,000 $71, Yes 9 Yes $71,000 $639, Yes 9 Yes $71,000 $639, Yes 9 Yes $71,000 $639,000 8 No 0 No N/A N/A 10 No 0 No N/A N/A 12 Yes 4 No $71,000 $284, Yes 8 No $71,000 $568, Yes 8 No $71,000 $568, Yes 8 Yes $71,000 $568, Yes 8 Yes $71,000 $568, Yes 8 Yes $71,000 $568, Yes 8 Yes $71,000 $568,000 I-10 Corridor Project 5

16 Chapter 2 Results of the Noise Study Report Table 2-2. Summary of Barrier Evaluation from Noise Study Report (Alternative 3) Barrier Location Station Height (feet) Acoustically Feasible? Number of Benefited Residences Design Goal Achieved? Reasonable Allowance per Residence Total Reasonable Allowance 8 No 0 No N/A N/A 10 No 0 No N/A N/A S1708 Private Property South of I-10, East of Cherry Avenue to No 0 No N/A N/A 14 No 0 No N/A N/A 16 Yes 1 No $71,000 $71, Yes 1 No $71,000 $71, Yes 1 No $71,000 $71, Yes 2 No $71,000 $142, Yes 2 Yes $71,000 $142,000 8 No 0 No N/A N/A 10 No 0 No N/A N/A S1748 Private Property South of I-10, at Beach Avenue to No 0 No N/A N/A 14 Yes 3 No $71,000 $213, Yes 3 No $71,000 $213, Yes 3 No $71,000 $213, Yes 3 No $71,000 $213, Yes 3 No $71,000 $213, Yes 3 Yes $71,000 $213,000 6 I-10 Corridor Project

17 Chapter 2 Results of the Noise Study Report Barrier Location Station S1818 S1934 Private Property South of I-10, East of Citrus Avenue Private Property South of I-10, at Locust Avenue Table 2-2. Summary of Barrier Evaluation from Noise Study Report (Alternative 3) to to Height (feet) N/A = Not applicable. Barrier does not provide 5 db of noise reduction. Acoustically Feasible? Number of Benefited Residences Design Goal Achieved? Reasonable Allowance per Residence Total Reasonable Allowance 8 No 0 No N/A N/A 10 No 0 No N/A N/A 12 No 0 No N/A N/A 14 Yes 1 No $71,000 $71, Yes 1 No $71,000 $71, Yes 1 No $71,000 $71, Yes 1 No $71,000 $71, Yes 9 Yes $71,000 $639, Yes 9 Yes $71,000 $639,000 8 No 0 No N/A N/A 10 No 0 No N/A N/A 12 Yes 2 No $71,000 $142, Yes 2 No $71,000 $142, Yes 2 Yes $71,000 $142, Yes 3 Yes $71,000 $213, Yes 3 Yes $71,000 $213, Yes 3 Yes $71,000 $213, Yes 3 Yes $71,000 $213,000 I-10 Corridor Project 7

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19 Chapter 3 Preliminary Noise Abatement Decision 3.1 Summary of Key Information The NSR addendum analyzes noise barriers with heights from 8 to 24 feet to determine the feasibility of noise abatement. Tables 3-1 and 3-2 summarize the preliminary noise abatement decision for Alternatives 2 and 3 by investigating acoustical feasibility, number of benefited residences, total reasonableness allowance ($71,000 per benefitted receiver/residence), engineer s cost estimate for the abatement, comparison of the estimated construction cost versus allowance, and if the 7-dB reduction design goal is met. Wall construction cost estimates are based on masonry walls in accordance with Caltrans standard plans and specifications. Cost estimates are based on the Caltrans Cost Database (CCD) (Caltrans, ), which tabulates average unit costs of construction-related items from recent state transportation projects. Cost calculations for soundwalls include the cost of the wall, piles, earthwork, and traffic control. The final cost estimate also includes a 10 percent contingency. Tables in Appendices C and D summarize the engineer s cost estimate for constructing these walls. Costs of related activities, such as clearing and grubbing, vine landscaping, and typical aesthetic treatments, have not been estimated because these items are variable and could change substantially depending on several project-per-project factors. Tables 3-1 and 3-2 summarize abatement key information, including reasonableness allowances and estimated construction costs for Alternatives 2 and 3. I-10 Corridor Project 9

20 Chapter 3 Preliminary Noise Abatement Decision Barrier S1818 S1834 Height (feet) Table 3-1. Summary of Abatement Key Information (Alternative 2) Acoustically Feasible? Number of Benefited Residences Design Goal Achieved? Total Reasonable Allowance Estimated Construction Cost Cost Less than Allowance? 8 No 0 No N/A N/A N/A 10 No 0 No N/A N/A N/A 12 No 0 No N/A N/A N/A 14 Yes 1 No $71,000 $324,000 No 16 Yes 1 No $71,000 $359,500 No 18 Yes 1 Yes $71,000 $395,900 No 20 Yes 9 Yes $639,000 $433,500 Yes 22 Yes 9 Yes $639,000 $472,700 Yes 24 Yes 9 Yes $639,000 $514,200 Yes 8 No 0 No N/A N/A N/A 10 No 0 No N/A N/A N/A 12 Yes 4 No $284,000 $290,300 No 14 Yes 8 No $568,000 $326,000 Yes 16 Yes 8 No $568,000 $361,700 Yes 18 Yes 8 Yes $568,000 $398,300 Yes 20 Yes 8 Yes $568,000 $436,200 Yes 22 Yes 8 Yes $568,000 $475,700 Yes 24 Yes 8 Yes $568,000 $517,400 Yes N/A = Not applicable. Barrier does not provide 5 db of noise reduction. 10 I-10 Corridor Project

21 Chapter 3 Preliminary Noise Abatement Decision Barrier S1708 S1748 Height (feet) Table 3-2. Summary of Abatement Key Information (Alternative 3) Acoustically Feasible? Number of Benefited Residences Design Goal Achieved? Total Reasonable Allowance Estimated Construction Cost Cost Less than Allowance? 8 No 0 No N/A N/A N/A 10 No 0 No N/A N/A N/A 12 No 0 No N/A N/A N/A 14 No 0 No N/A N/A N/A 16 Yes 1 No $71,000 $169,600 No 18 Yes 1 No $71,000 $186,700 No 20 Yes 1 No $71,000 $204,300 No 22 Yes 2 No $142,000 $222,800 No 24 Yes 2 Yes $142,000 $242,200 No 8 No 0 No N/A N/A N/A 10 No 0 No N/A N/A N/A 12 No 0 No N/A N/A N/A 14 Yes 3 No $213,000 $288,200 No 16 Yes 3 No $213,000 $319,800 No 18 Yes 3 No $213,000 $352,100 No 20 Yes 3 No $213,000 $385,600 No 22 Yes 3 No $213,000 $420,400 No 24 Yes 3 Yes $213,000 $457,300 No I-10 Corridor Project 11

22 Chapter 3 Preliminary Noise Abatement Decision Barrier S1818 S1934 Height (feet) Table 3-2. Summary of Abatement Key Information (Alternative 3) Acoustically Feasible? Number of Benefited Residences Design Goal Achieved? Total Reasonable Allowance Estimated Construction Cost Cost Less than Allowance? 8 No 0 No N/A N/A N/A 10 No 0 No N/A N/A N/A 12 No 0 No N/A N/A N/A 14 Yes 1 No $71,000 $324,000 No 16 Yes 1 No $71,000 $359,500 No 18 Yes 1 No $71,000 $395,900 No 20 Yes 1 No $71,000 $433,500 No 22 Yes 9 Yes $639,000 $472,700 Yes 24 Yes 9 Yes $639,000 $514,200 Yes 8 No 0 No N/A N/A N/A 10 No 0 No N/A N/A N/A 12 Yes 2 No $142,000 $265,500 No 14 Yes 2 No $142,000 $298,200 No 16 Yes 2 Yes $142,000 $330,800 No 18 Yes 3 Yes $213,000 $364,300 No 20 Yes 3 Yes $213,000 $398,900 No 22 Yes 3 Yes $213,000 $435,000 No 24 Yes 3 Yes $213,000 $473,100 No N/A = Not applicable. Barrier does not provide 5 db of noise reduction. 12 I-10 Corridor Project

23 Chapter 3 Preliminary Noise Abatement Decision 3.2 Nonacoustical Factors Relating to Feasibility Based on the preliminary project and abatement design, no nonacoustical factors related to feasibility have been identified that would be considered out of the ordinary for soundwall construction. The nonacoustical factors considered are geometric standards (e.g., sight distances), safety, maintenance, security, geotechnical issues, and utility relocations. Some of these nonacoustical factors, including geotechnical issues, will have to be investigated at the design phase. All barriers included in this addendum are proposed to be constructed on private property; therefore, all of the residences behind these barriers on private property would need to sign a Temporary Construction Easement Form prior to the beginning of construction. These barriers would not substantially affect the cost or design of the project in its entirety. Construction requirements are considered typical for soundwall construction. 3.3 Preliminary Recommendation and Decision Several factors were considered in making each soundwall recommendation: Line-of-sight break between a receptor and an 11.5-foot-high truck stack; Number of benefited receptors; Cost per benefited receptor; Degree of noise reduction (a barrier that provides only 1 db of improved noise reduction over a lower barrier and costs substantially more may not be favored over the lower barrier); and 15-year minimum life cycle. The preliminary noise abatement decision presented in this report is based on preliminary project alignments and profiles, which may be subject to change. As such, the physical characteristics of noise abatement described herein also may be subject to change. If pertinent parameters change substantially during the final project design, the preliminary noise abatement decision may be changed or eliminated from the final project design. A final decision to construct noise abatement will be made upon completion of the project design. The preliminary noise abatement decision presented here will be included in the Draft ED, which will be circulated for public review. I-10 Corridor Project 13

24 Chapter 3 Preliminary Noise Abatement Decision Alternative 2 Based on the information summarized in Table 3-1 and noise reductions specified in the NSR Addendum, the following discussion presents the engineer s recommendation on the proposed height and reasonableness of each feasible and proposed soundwall for Alternative 2. Segment 9 West of Cherry Avenue to Citrus Avenue There are no frequent outdoor use areas in this segment that are impacted by Alternative 2 where it is feasible to apply standard noise abatement techniques. Segment 10 Citrus Avenue to Sierra Avenue Soundwall S1818: Soundwall S1818 would be 810 feet long and located on private property, south of I-10, east of Citrus Avenue. Figure 78 in Appendix C of the NSR Addendum shows the location, minimum length, and height required for this soundwall to provide feasible traffic noise abatement and meet the design goal. Soundwall S1818 meets the 7-dB noise reduction design goal at 18 feet. The estimated total construction cost of $395,900 for this 18-foot high wall exceeds the reasonable cost allowance of $71,000. However, the estimated total construction cost for the 20-foot high wall option is $433,500, which is less than the reasonable cost allowance of $639,000. With consideration of the acoustic benefit and the incremental cost, Soundwall S1818 is feasible and reasonable, and is recommended to be a 20-foot-high masonry wall, as shown in Figure 78 in Appendix A of this report. Soundwall S1834: Soundwall S1834 would be 815 feet long and located on private property, south of I-10, east of Cypress Avenue. Figure 79 in Appendix C of the NSR Addendum shows the location, minimum length, and height required for this soundwall to provide feasible traffic noise abatement and meet the design goal. Soundwall S1834 meets the 7-dB noise reduction goal at 18 feet. The estimated total construction cost of $398,300 for this 18-foot wall is less than the reasonable cost allowance of $568,000. Soundwall S1834 was also analyzed as a 20-, 22-, and 24- foot high wall, but the number of benefitted receivers would remain the same. With consideration of the acoustic benefit and the incremental cost, Soundwall S1834 is feasible and reasonable, and is recommended to be an 18-foot-high masonry wall, as shown in Figure 79 in Appendix A of this report. 14 I-10 Corridor Project

25 Chapter 3 Preliminary Noise Abatement Decision Segment 11 Sierra Avenue to Cedar Avenue There are no frequent outdoor use areas in this segment that are impacted by Alternative 2; therefore, noise abatement was not required. Alternative 3 Based on the information summarized in Table 3-2 and noise reductions specified in the NSR Addendum, the following discussion presents the engineer s recommendation on the proposed height and reasonableness of each feasible and proposed soundwall for Alternative 3. West of Cherry Avenue to Citrus Avenue Soundwall S1708: Soundwall S1708 would be 380 feet long and located on private property, south of I-10, east of Cherry Avenue. Figure 130 in Appendix C of the NSR Addendum shows the location, minimum length, and height required for this soundwall to provide feasible traffic noise abatement and meet the design goal. Soundwall S1708 meets the 7-dB noise reduction goal at 24 feet; however, the estimated construction cost of $242,200 exceeds the reasonable cost allowance of $142,000. With consideration of acoustic benefit and the incremental cost, Soundwall S1708 is not reasonable; therefore, it is not recommended. Soundwall S1748: Soundwall S1748 would be 720 feet long and located on private property, south of I-10 at Beech Avenue. Figure 131 in Appendix C of the NSR Addendum shows the location, minimum length, and height required for this soundwall to provide feasible traffic noise abatement and meet the design goal. Soundwall S1748 meets the 7-dB noise reduction goal at 24 feet. The estimated total construction cost of $457,300 is more than the reasonable cost allowance of $213,000. With consideration of acoustic benefit and the incremental cost, Soundwall S1748 is not reasonable; therefore, it is not recommended. Citrus Avenue to Sierra Avenue Soundwall S1818: Soundwall S1818 would be 810 feet long and located on private property, south of I-10, east of Citrus Avenue. Figure 133 in Appendix C of the NSR Addendum shows the location, minimum length, and height required for this soundwall to provide feasible traffic noise abatement and meet the design goal. I-10 Corridor Project 15

26 Chapter 3 Preliminary Noise Abatement Decision Soundwall S1818 meets the 7-dB noise reduction goal at 22 feet. The estimated total construction cost of $472,700 is less than the reasonable cost allowance of $639,000. As a 22-foot wall, Soundwall S1818 benefits 9 receivers. A 24-foot wall was also analyzed for Soundwall S1818, but the number of benefitted receivers would remain the same, and no additional noise reduction would be achieved. With consideration of acoustic benefit and the incremental cost, Soundwall S1818 is reasonable and is recommended to be a 22-foot high masonry wall, as shown in Figure 133 in Appendix B of this report. Sierra Avenue to Cedar Avenue Soundwall S1934: Soundwall S1934 would be 745 feet long and located on private property, south of I-10, at Locust Avenue. Figure 137 in Appendix C of the NSR Addendum shows the location, minimum length, and height required for this soundwall to provide feasible traffic noise abatement and meet the design goal. Soundwall S1934 meets the 7-dB noise reduction goal at 16 feet. The estimated total construction cost of $330,800 exceeds the reasonable cost allowance of $142,000. With consideration of acoustic benefit and the incremental cost, Soundwall S1934 is not reasonable; therefore, it is not recommended. 16 I-10 Corridor Project

27 Chapter 4 Secondary Effects of Abatement There are no additional impacts or secondary effects on cultural resources, scenic views, hazardous materials, biology, or other resources expected to occur. I-10 Corridor Project 17

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29 Chapter 5 References Parsons, Noise Study Report (NSR): I-10 Corridor Project Caltrans Technical Noise Supplement. September. Environmental Program, Noise, Air Quality, and Hazardous Waste Management Office. Sacramento, CA. Available: ( Contract Cost Data (CCD) Noise Abatement Decision Report (NADR) Template ( Highway Design Manual, Chapter 1100 Highway Traffic Noise. September (updated). Project Development Procedures Manual Chapter 30 Highway Traffic Noise Abatement (updated). Project Development Procedures Manual Appendix K Preparation Guidelines for Project Report. Section 6H - Noise Abatement Decision Report Section I-10 Corridor Project 19

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31 Chapter 6 List of Preparers Emily Hoyt, Associate Planner. B.A. Urban Studies, Loyola Marymount University. 2 years of environmental planning experience. Contribution: Author of Noise Abatement Decision Report. David Ovadia, P.E., Senior Project Engineer, B.S. Civil Engineering, California State University Long Beach, 20 years of experience. Contribution: Cost Estimates. Areg Gharabegian, P.E., Program Director, B.S. Mechanical Engineering, Pahlavi University, M.S. Energy, Resources, and Environment, George Washington University, 36 years of experience in conducting noise and vibration studies. Contribution: Technical directions and quality control for the Noise Study Report and NADR. Greg Berg, Senior Scientist - Noise and Vibration, B.A. Acoustics, Columbia College Chicago; 10 years of experience. Contribution: Author of Noise Study Report. I-10 Corridor Project 21

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33 Appendix A Alternative 2 Figures Showing Recommended Barrier Heights and Locations

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35 TABLE 1 Noise Abatement Information (Alternative 2) Number of Benefited Residences Total Reasonable Allowance Masonry Estimated Construction Cost Cost Less than Allowance Preliminary Noise Abatement Decision Height Acoustically Barrier (feet) Feasible? S Yes 9 $639,000 $433,500 Yes Reasonable S Yes 8 $568,000 $398,300 Yes Reasonable

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47 Appendix B Alternative 3 Figures Showing Recommended Barrier Heights and Locations

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49 TABLE 2 Noise Abatement Information (Alternative 3) Barrier Height (feet) Acoustically Feasible? Number of Benefited Residences Total Reasonable Allowance Masonry Estimated Construction Cost Cost Less than Allowance Preliminary Noise Abatement Decision S Yes 2 $142,000 $242,200 No Not Reasonable S Yes 3 $213,000 $457,300 No Not Reasonable S Yes 9 $639,000 $472,700 Yes Reasonable S Yes 3 $142,000 $330,800 No Not Reasonable

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61 Appendix C Alternative 2 Cost Analysis

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63 I 10 Corridor Soundwall Cost Estimate Alternative 2 HOV Existing Condition Proposed Wall type Sound Wall type Wall type case(1/2) Friction angle Fence Sound wall on piles Sound wall masonary block on pile cap Case 1 25 Location: Private Property South of I 10, East of Citrus Barrier depth H_e Station: Wall Length (FT) 810 Cost Estimate for Barrier S1818 (Alternative 2 HOV) Items Unit Cost Barrier Height, ft Pile Length (ft) Varies Pile Spacing (ft) Varies # of Piles Varies Total Pile Length (ft) #N/A Pile cost (Drill & Cast) $50/LF $21, $25, $31, $36, $41, $46, $53, $61, $71, #N/A Sound Wall Area (SQFT) #N/A Masonry Cost 2 $17/SQFT $110, $137, $165, $192, $220, $247, $275, $302, $330, #N/A Pile Cap (CY) #N/A Structure Conc. Cost $650/CY $51, $51, $51, $51, $51, $51, $51, $51, $51, #N/A Bridge $0.00 $0.00 $0.00 $0.00 $0.00 $0.00 $0.00 $0.00 $0.00 #N/A Structure Excavation (CY) #N/A Structure Excavation Cost $65/CY $5, $5, $5, $5, $5, $5, $5, $5, $5, #N/A Remove Exist Wall Cost $17/LF $0.00 $0.00 $0.00 $0.00 $0.00 $0.00 $0.00 $0.00 $0.00 #N/A Design Barrier Remove Exist Retaining Wall Cost $40/LF Retaining Wall Area (SQFT) Retaining Wall Cost $100/SQFT $0.00 $0.00 $0.00 $0.00 $0.00 $0.00 $0.00 $0.00 $0.00 #N/A Barrier (Type 736S) Barrier (Type SV) $90/LF $135/LF Temporary & Access Easement $0.00 $0.00 $0.00 $0.00 $0.00 $0.00 $0.00 $0.00 $0.00 #N/A Wall Cost (Masonry) $188, $219, $253, $285, $317, $350, $385, $420, $458, #N/A Traffic Control $11/LF $10, $10, $10, $10, $10, $10, $10, $10, $10, #N/A Contingencies (10%) $18, $21, $25, $28, $31, $35, $38, $42, $45, #N/A Total Wall Cost (Masonry) $217, $251, $288, $324, $359, $395, $433, $472, $514, #N/A Total Wall Cost (Masonry) $217,300 $251,800 $288,500 $324,000 $359,500 $395,900 $433,500 $472,700 $514,200 #N/A Design Barrier Length Per Height (FT) #N/A #N/A #N/A #N/A #N/A #N/A #N/A #N/A #N/A Notes: 1. Estimates are based on Caltrans Database cost for Includes cost for masonry, steel, cell fill material, scaffolding, and mobilization. 3. No structure excavation associated with piling. 4. Wall designs based on 2010 Caltrans Standard Plans. Location: Private Property South of I 10, East of Citrus Station: Wall #: S1818 Page 1 of 2 7/31/2015

64 I 10 Corridor Soundwall Cost Estimate Alternative 2 HOV Existing Condition Proposed Wall type Sound Wall type Wall type case(1/2) Friction angle Fence Sound wall on piles Sound wall masonary block on pile cap Case 1 25 Location: Private Property South of I 10, East of Cypress Barrier depth H_e Station: Wall Length (FT) 815 Cost Estimate for Barrier S1834 (Alternative 2 HOV) Items Unit Cost Barrier Height, ft Pile Length (ft) Varies Pile Spacing (ft) Varies # of Piles Varies Total Pile Length (ft) #N/A Pile cost (Drill & Cast) $50/LF $22, $25, $31, $36, $41, $46, $53, $61, $72, #N/A Sound Wall Area (SQFT) #N/A Masonry Cost 2 $17/SQFT $110, $138, $166, $193, $221, $249, $277, $304, $332, #N/A Pile Cap (CY) #N/A Structure Conc. Cost $650/CY $51, $51, $51, $51, $51, $51, $51, $51, $51, #N/A Bridge $0.00 $0.00 $0.00 $0.00 $0.00 $0.00 $0.00 $0.00 $0.00 #N/A Structure Excavation (CY) #N/A Structure Excavation Cost $65/CY $5, $5, $5, $5, $5, $5, $5, $5, $5, #N/A Remove Exist Wall Cost $17/LF $0.00 $0.00 $0.00 $0.00 $0.00 $0.00 $0.00 $0.00 $0.00 #N/A Design Barrier Remove Exist Retaining Wall Cost $40/LF Retaining Wall Area (SQFT) Retaining Wall Cost $100/SQFT $0.00 $0.00 $0.00 $0.00 $0.00 $0.00 $0.00 $0.00 $0.00 #N/A Barrier (Type 736S) Barrier (Type SV) $90/LF $135/LF Temporary & Access Easement $0.00 $0.00 $0.00 $0.00 $0.00 $0.00 $0.00 $0.00 $0.00 #N/A Wall Cost (Masonry) $189, $221, $254, $287, $319, $352, $387, $423, $461, #N/A Traffic Control $11/LF $10, $10, $10, $10, $10, $10, $10, $10, $10, #N/A Contingencies (10%) $18, $22, $25, $28, $31, $35, $38, $42, $46, #N/A Total Wall Cost (Masonry) $218, $253, $290, $326, $361, $398, $436, $475, $517, #N/A Total Wall Cost (Masonry) $218,600 $253,400 $290,300 $326,000 $361,700 $398,300 $436,200 $475,700 $517,400 #N/A Design Barrier Length Per Height (FT) #N/A #N/A #N/A #N/A #N/A #N/A #N/A #N/A #N/A Notes: 1. Estimates are based on Caltrans Database cost for Includes cost for masonry, steel, cell fill material, scaffolding, and mobilization. 3. No structure excavation associated with piling. 4. Wall designs based on 2010 Caltrans Standard Plans. Location: Private Property South of I 10, East of Cypress Station: Wall #: S1834 Page 2 of 2 7/31/2015

65 Appendix D Alternative 3 Cost Analysis

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67 I 10 Corridor Soundwall Cost Estimate Alternative 3 Express Lanes Existing Condition Proposed Wall type Sound Wall type Wall type case(1/2) Friction angle Fence Sound wall on piles Sound wall masonary block on pile cap Case 1 25 Location: Private Property South of I 10, East of Cherry Barrier depth H_e Station: Wall Length (FT) 380 Items Unit Cost Cost Estimate for Barrier S1708 (Alternative 3 Express Lanes) Barrier Height, ft Pile Length (ft) Varies Pile Spacing (ft) Varies # of Piles Varies Total Pile Length (ft) #N/A Pile cost (Drill & Cast) $50/LF $10, $12, $15, $17, $19, $22, $25, $29, $33, #N/A Sound Wall Area (SQFT) #N/A Masonry Cost 2 $17/SQFT $51, $64, $77, $90, $103, $116, $129, $142, $155, #N/A Pile Cap (CY) #N/A Structure Conc. Cost $650/CY $24, $24, $24, $24, $24, $24, $24, $24, $24, #N/A Bridge $0.00 $0.00 $0.00 $0.00 $0.00 $0.00 $0.00 $0.00 $0.00 #N/A Structure Excavation (CY) #N/A Structure Excavation Cost $65/CY $2, $2, $2, $2, $2, $2, $2, $2, $2, #N/A Remove Exist Wall Cost $17/LF $0.00 $0.00 $0.00 $0.00 $0.00 $0.00 $0.00 $0.00 $0.00 #N/A Design Barrier Remove Exist Retaining Wall Cost $40/LF Retaining Wall Area (SQFT) Retaining Wall Cost $100/SQFT $0.00 $0.00 $0.00 $0.00 $0.00 $0.00 $0.00 $0.00 $0.00 #N/A Barrier (Type 736S) Barrier (Type SV) $90/LF $135/LF Temporary & Access Easement $0.00 $0.00 $0.00 $0.00 $0.00 $0.00 $0.00 $0.00 $0.00 #N/A Wall Cost (Masonry) $88, $103, $119, $134, $149, $164, $180, $197, $215, #N/A Traffic Control $11/LF $5, $5, $5, $5, $5, $5, $5, $5, $5, #N/A Contingencies (10%) $8, $10, $11, $13, $14, $16, $18, $19, $21, #N/A Total Wall Cost (Masonry) $102, $119, $136, $152, $169, $186, $204, $222, $242, #N/A Total Wall Cost (Masonry) $102,800 $119,000 $136,300 $152,900 $169,600 $186,700 $204,300 $222,800 $242,200 #N/A Design Barrier Length Per Height (FT) #N/A #N/A #N/A #N/A #N/A #N/A #N/A #N/A #N/A Notes: 1. Estimates are based on Caltrans Database cost for Includes cost for masonry, steel, cell fill material, scaffolding, and mobilization. 3. No structure excavation associated with piling. 4. Wall designs based on 2010 Caltrans Standard Plans. Location: Private Property South of I 10, East of Cherry Station: Wall #: S1708 Page 1 of 4 7/31/2015

68 I 10 Corridor Soundwall Cost Estimate Alternative 3 Express Lanes Existing Condition Proposed Wall type Sound Wall type Wall type case(1/2) Friction angle Nothing Sound wall on piles Sound wall masonary block on pile cap Case 1 25 Location: Private Property South of I 10, at Beech Barrier depth H_e Station: Wall Length (FT) 720 Items Unit Cost Cost Estimate for Barrier S1748 (Alternative 3 Express Lanes) Barrier Height, ft Pile Length (ft) Varies Pile Spacing (ft) Varies # of Piles Varies Total Pile Length (ft) #N/A Pile cost (Drill & Cast) $50/LF $19, $23, $28, $32, $36, $41, $47, $54, $63, #N/A Sound Wall Area (SQFT) #N/A Masonry Cost 2 $17/SQFT $97, $122, $146, $171, $195, $220, $244, $269, $293, #N/A Pile Cap (CY) #N/A Structure Conc. Cost $650/CY $45, $45, $45, $45, $45, $45, $45, $45, $45, #N/A Bridge $0.00 $0.00 $0.00 $0.00 $0.00 $0.00 $0.00 $0.00 $0.00 #N/A Structure Excavation (CY) #N/A Structure Excavation Cost $65/CY $4, $4, $4, $4, $4, $4, $4, $4, $4, #N/A Remove Exist Wall Cost $17/LF $0.00 $0.00 $0.00 $0.00 $0.00 $0.00 $0.00 $0.00 $0.00 #N/A Design Barrier Remove Exist Retaining Wall Cost $40/LF Retaining Wall Area (SQFT) Retaining Wall Cost $100/SQFT $0.00 $0.00 $0.00 $0.00 $0.00 $0.00 $0.00 $0.00 $0.00 #N/A Barrier (Type 736S) Barrier (Type SV) $90/LF $135/LF Temporary & Access Easement $0.00 $0.00 $0.00 $0.00 $0.00 $0.00 $0.00 $0.00 $0.00 #N/A Wall Cost (Masonry) $167, $195, $225, $253, $282, $311, $342, $374, $407, #N/A Traffic Control $11/LF $9, $9, $9, $9, $9, $9, $9, $9, $9, #N/A Contingencies (10%) $16, $19, $22, $25, $28, $31, $34, $37, $40, #N/A Total Wall Cost (Masonry) $193, $224, $256, $288, $319, $352, $385, $420, $457, #N/A Total Wall Cost (Masonry) $193,300 $224,000 $256,600 $288,200 $319,800 $352,100 $385,600 $420,400 $457,300 #N/A Design Barrier Length Per Height (FT) #N/A #N/A #N/A #N/A #N/A #N/A #N/A #N/A #N/A Notes: 1. Estimates are based on Caltrans Database cost for Includes cost for masonry, steel, cell fill material, scaffolding, and mobilization. 3. No structure excavation associated with piling. 4. Wall designs based on 2010 Caltrans Standard Plans. Location: Private Property South of I 10, at Beech Station: Wall #: S1748 Page 2 of 4 7/31/2015

69 I 10 Corridor Soundwall Cost Estimate Alternative 3 Express Lanes Existing Condition Proposed Wall type Sound Wall type Wall type case(1/2) Friction angle Fence Sound wall on piles Sound wall masonary block on pile cap Case 1 25 Location: Private Property South of I 10, East of Citrus Barrier depth H_e Station: Wall Length (FT) 810 Items Unit Cost Cost Estimate for Barrier S1818 (Alternative 3 Express Lanes) Barrier Height, ft Pile Length (ft) Varies Pile Spacing (ft) Varies # of Piles Varies Total Pile Length (ft) #N/A Pile cost (Drill & Cast) $50/LF $21, $25, $31, $36, $41, $46, $53, $61, $71, #N/A Sound Wall Area (SQFT) #N/A Masonry Cost 2 $17/SQFT $110, $137, $165, $192, $220, $247, $275, $302, $330, #N/A Pile Cap (CY) #N/A Structure Conc. Cost $650/CY $51, $51, $51, $51, $51, $51, $51, $51, $51, #N/A Bridge $0.00 $0.00 $0.00 $0.00 $0.00 $0.00 $0.00 $0.00 $0.00 #N/A Structure Excavation (CY) #N/A Structure Excavation Cost $65/CY $5, $5, $5, $5, $5, $5, $5, $5, $5, #N/A Remove Exist Wall Cost $17/LF $0.00 $0.00 $0.00 $0.00 $0.00 $0.00 $0.00 $0.00 $0.00 #N/A Design Barrier Remove Exist Retaining Wall Cost $40/LF Retaining Wall Area (SQFT) Retaining Wall Cost $100/SQFT $0.00 $0.00 $0.00 $0.00 $0.00 $0.00 $0.00 $0.00 $0.00 #N/A Barrier (Type 736S) Barrier (Type SV) $90/LF $135/LF Temporary & Access Easement $0.00 $0.00 $0.00 $0.00 $0.00 $0.00 $0.00 $0.00 $0.00 #N/A Wall Cost (Masonry) $188, $219, $253, $285, $317, $350, $385, $420, $458, #N/A Traffic Control $11/LF $10, $10, $10, $10, $10, $10, $10, $10, $10, #N/A Contingencies (10%) $18, $21, $25, $28, $31, $35, $38, $42, $45, #N/A Total Wall Cost (Masonry) $217, $251, $288, $324, $359, $395, $433, $472, $514, #N/A Total Wall Cost (Masonry) $217,300 $251,800 $288,500 $324,000 $359,500 $395,900 $433,500 $472,700 $514,200 #N/A Design Barrier Length Per Height (FT) #N/A #N/A #N/A #N/A #N/A #N/A #N/A #N/A #N/A Notes: 1. Estimates are based on Caltrans Database cost for Includes cost for masonry, steel, cell fill material, scaffolding, and mobilization. 3. No structure excavation associated with piling. 4. Wall designs based on 2010 Caltrans Standard Plans. Location: Private Property South of I 10, East of Citrus Station: Wall #: S1818 Page 3 of 4 7/31/2015

70 I 10 Corridor Soundwall Cost Estimate Alternative 3 Express Lanes Existing Condition Proposed Wall type Sound Wall type Wall type case(1/2) Friction angle Blockwall Sound wall on piles Sound wall masonary block on pile cap Case 1 25 Location: Private Property South of I 10, at Locust Barrier depth H_e Station: Wall Length (FT) 745 Items Unit Cost Cost Estimate for Barrier S1934 (Alternative 3 Express Lanes) Barrier Height, ft Pile Length (ft) Varies Pile Spacing (ft) Varies # of Piles Varies Total Pile Length (ft) #N/A Pile cost (Drill & Cast) $50/LF $20, $23, $29, $33, $37, $42, $49, $56, $65, #N/A Sound Wall Area (SQFT) #N/A Masonry Cost 2 $17/SQFT $101, $126, $151, $177, $202, $227, $253, $278, $303, #N/A Pile Cap (CY) #N/A Structure Conc. Cost $650/CY $47, $47, $47, $47, $47, $47, $47, $47, $47, #N/A Bridge $0.00 $0.00 $0.00 $0.00 $0.00 $0.00 $0.00 $0.00 $0.00 #N/A Structure Excavation (CY) #N/A Structure Excavation Cost $65/CY $4, $4, $4, $4, $4, $4, $4, $4, $4, #N/A Remove Exist Wall Cost $17/LF $0.00 $0.00 $0.00 $0.00 $0.00 $0.00 $0.00 $0.00 $0.00 #N/A Design Barrier Remove Exist Retaining Wall Cost $40/LF Retaining Wall Area (SQFT) Retaining Wall Cost $100/SQFT $0.00 $0.00 $0.00 $0.00 $0.00 $0.00 $0.00 $0.00 $0.00 #N/A Barrier (Type 736S) Barrier (Type SV) $90/LF $135/LF Temporary & Access Easement $0.00 $0.00 $0.00 $0.00 $0.00 $0.00 $0.00 $0.00 $0.00 #N/A Wall Cost (Masonry) $173, $202, $232, $262, $292, $322, $354, $386, $421, #N/A Traffic Control $11/LF $9, $9, $9, $9, $9, $9, $9, $9, $9, #N/A Contingencies (10%) $17, $20, $23, $26, $29, $32, $35, $38, $42, #N/A Total Wall Cost (Masonry) $199, $231, $265, $298, $330, $364, $398, $434, $473, #N/A Total Wall Cost (Masonry) $199,900 $231,700 $265,500 $298,200 $330,800 $364,300 $398,900 $435,000 $473,100 #N/A Design Barrier Length Per Height (FT) #N/A #N/A #N/A #N/A #N/A #N/A #N/A #N/A #N/A Notes: 1. Estimates are based on Caltrans Database cost for Includes cost for masonry, steel, cell fill material, scaffolding, and mobilization. 3. No structure excavation associated with piling. 4. Wall designs based on 2010 Caltrans Standard Plans. Location: Private Property South of I 10, at Locust Station: Wall #: S1934 Page 4 of 4 7/31/2015

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